Phenotypic variation of autosomal recessive pseudohypoaldosteronism type I: a case in point.

We present a 27-month-old male infant with pseudohypoaldosteronism, with two novel α-subunits, epithelial sodium channel (ENaC) mutations. Despite the presence of the ENaC in the lungs, kidneys, and exocrine glands, he continues to only have renal and exocrine involvement, stressing differential effects of the mutation in each organ.